Where is the head? What does water head mean?

The town of Shuitou is located inQuanzhou City, Fujian ProvinceIt is 28 kilometers away from the city in the south of Nan'an City. It has jurisdiction over 4 communities and 28 administrative villages. The town ** is stationed in Xiasheng Road.

It covers an area of about 127 square kilometers.

324 National Highway, Shui (Tou) Liudian Highway and An (Hai) Shui (Tou) Highway, Fuxia Expressway transit.

There is Panlong Development Zone in Shuitou Town, and the historic site has Anping Bridge, a national key cultural relics protection unit.

Wuli Bridge), Zheng Chenggong's tomb.

Location Realm. Shuitou Town, Nan'an City, Fujian Province is located in the southeast of Nan'an, geographically on the coast, and Anhai Town in Jinjiang in the east. Across the "Anping Bridge" to each other, west and Tong'an.

Maxiang Town is divided by ridges, connecting Shijing in the south and Guanqiao in the north. The geographical location is important, and it is the place where Zhangxia passes through Quanzhou, Jinjiang and Shishi.

The location is unique, located in Xiamen, Quan, Zhangnan and southern Fujian "Golden Triangle".

The central area, bordering the Xiamen Special Economic Zone, is known as the "South Gate" of Nan'an. The transportation is convenient, the Fuzhou-Xiamen Expressway runs through the whole territory, and it is far from Xiamen Airport.

and the port is only a few tens of kilometers.

The town is surrounded by mountains and seas, facing Taiwan across the sea, with developed economy and humanities, and is an important town in southern Fujian and a famous hometown of overseas Chinese. The terrain is high in the west and low in the east, with a coastline of 11 kilometers. National Highway 324 and Fuxia-Zhangzhou Expressway run through the whole territory, and the wharf is directly connected to the ocean.

Shuitou belongs to Nan'an City, Fujian Province, is the largest stone wholesale center in China, only 30 kilometers away from Xiamen.

1. Place names. How many heads, are you looking for the **?

A town below Quanzhou, Xiamen.

Shuitou Town, Pingyang County, Wenzhou City, Zhejiang Province.

Shuitou Town, Fuzhou.

Wait a minute. 2. Water pressure in the project.

The water head is in Cangnan, not Zhoushan Township, Yukou Town, Wencheng County.

This is a concept of hydraulics, and as for ** I can only say in the textbook, haha.

The total head is the sum of the positional head, the pressure head and the velocity head at a point in the water body.

Pressure head, which refers to the pressure potential energy per unit mass of water expressed by the height of the water column, is caused by the pressure difference between the buried and dismantled in the pressure field, and the reference pressure is the standard atmospheric pressure or the local atmospheric pressure.

Position head, refers to the position height of the calculation point from the datum plane 0-0, in hydraulics, called the liquid position head, it characterizes the position potential energy of the liquid per unit weight, referred to as the unit potential energy.

Flow velocity head refers to the mechanical energy due to the flow speed of the fluid, also known as kinetic energy.

Nan'an City, Quanzhou City, Fujian ProvinceShuitou Town, belonging to Nan'an City, Quanzhou City, Fujian Province, is located in the south of Nan'an City, facing Jinjiang Anhai Town across the water in the east, dividing it with Xiamen Xiang'an District in the west, connecting Shijing Town in the south and Guanqiao Town in the north, with an administrative area of 127 square kilometers. As of the end of 2019, the registered population of Shuitou Town was 122591.

During the Song Dynasty, it belonged to Changleli, Chang'anli, and Chongjiao in Taiping Township. In 1984, the commune was rebuilt into a township. In 1985, it was changed to Shuitou Town. As of October 2021, Shuitou Town has jurisdiction over 5 communities and 28 administrative villages, and the town's people** are stationed at No. 56 Xiasheng Street.

In 2020, Shuitou Town will complete the industrial output value of 100 million yuan, an increase over the previous year; Completed the limit of wholesale and retail sales of 100 million yuan, an increase in the previous year; The industrial and commercial tax paid was 100 million yuan, an increase in the previous year.

1. Position head: Calculate the position height of the point from the datum 0 - 0, in hydraulics, it is called position head, which characterizes the position potential energy of the liquid per unit weight, referred to as unit potential energy.

2. Piezometer pipe head: The manometer pipe head at any point of the pipeline is equal to the position height of the point relative to the datum plane plus the pressure head value of the point, that is, the sum of the position head and the pressure head.

3. Velocity head: also known as flow velocity head. That is, the ratio of the square of the velocity of the fluid motion to twice the acceleration due to gravity.

Its geometric significance is the height of the flow velocity per unit weight of the fluid on the cross-section of the meta-flow, which is equivalent to the height that the fluid can reach when it is sprayed straight upwards into the air at a vertical cavity at a velocity, regardless of the self-weight of the jet and the air resistance.

Its physical meaning is the kinetic energy of a fluid per unit weight on the cross-section of the meta-flow.

4. Total water head: The mechanical energy of groundwater includes kinetic energy and potential energy, which is expressed by the total water head (hydraulic head) h in hydraulics, and the dimension is [l].

The head of a water conservancy and hydropower project refers to the vertical height from the horizontal plane of the upstream water storage to the water surface of the downstream (tailwater). represents the potential energy (potential energy) of the water.

The higher the head, the greater the potential energy, and the more electricity can be generated for the same flow rate. Low head means that the head difference is small, the unit potential energy of the water body that can be stored is small, and the electricity generated by the same flow rate is less.

Shuitou Town belongs to Nan'an City, Quanzhou City, Fujian Province.

There is Panlong Development Zone in Shuitou Town, and the historic sites include Anping Bridge (Wuli Bridge) and Zheng Chenggong Tomb, which are national key cultural relics protection units. On October 8, 2018, he was selected as one of the top 1000 national comprehensive strength in 2018.

Shuitou Town has a unique location, located in the central area of the "Golden Triangle" of Xiamen, Quanzhou and Zhang-Fujian South, bordering the Xiamen Special Economic Zone, and is known as the "South Gate" of Nan'an. The transportation is convenient, and the Fubianqingxia Expressway runs through the whole territory, and it is only a few dozen kilometers away from Xiamen Airport and Port. The town is surrounded by mountains and seas, facing Taiwan across the sea, with developed economy and humanities, and is an important town in southern Fujian and a famous hometown of Kaipi overseas Chinese.

Shuitou Town belongs to Nan'an City, Quanzhou City, Fujian Province (county-level city). There is a development zone in Shuitou Town, and the historic sites include the national key cultural relics protection unit Anping Bridge (Wuli Bridge) and the tomb of Zheng Chenggong. On October 8, 2018, it was selected as one of the top 1000 towns in the comprehensive strength of the national fiber pickpocketing faction in 2018.

Shuitou Town has a unique location, located in the central area of the "Golden Triangle" of Xiamen, Quanzhou and Zhang-Fujian South, bordering the Xiamen Special Economic Zone, and is known as the "South Gate" of Nan'an. The transportation is convenient, the Fuzhou-Xiamen Expressway runs through the whole territory, and it is only a few dozen kilometers away from Xiamen Airport and Port. The town is surrounded by mountains and seas, facing Taiwan across the sea, with developed economy and humanities, and is an important town in southern Fujian and a famous hometown of overseas Chinese.

The head of the water is the difference in height of the falling water.

Water conservancy projects are used to control and allocate surface water and groundwater in nature to achieve the purpose of eliminating harm and rejuvenating profits. Also known as water engineering. Water is an indispensable and valuable resource for human production and life, but its natural state does not fully meet the needs of human beings.

It is very systematic and comprehensive. A single water conservancy project is an integral part of various water conservancy projects in the same river basin and the same area, and these projects complement each other and restrict each other. Individual water conservancy projects are often comprehensive in their own right, and the service objectives are closely related to each other, but also contradictory. Water conservancy projects and other sectors of the national economy are also closely related.

Complex working conditions. All kinds of hydraulic structures in water conservancy projects are constructed and operated under natural conditions such as meteorology, hydrology, geology and so on that are difficult to accurately grasp, and they bear the role of thrust, buoyancy, penetration, scouring force and so on of water, and the working conditions are more complex than other buildings.

The regional water supply is composed of the water supply of several individual projects and calculation units. Regional water supply, generally carried out by establishing a regional water supply** model.

Make full use of surface water, rationally develop groundwater, and make overall arrangements for groundwater and surface water; The number of wells and the amount of exploitation in each layer should be determined according to the water replenishment capacity of each aquifer, so as to achieve layered water intake, combining shallow, medium and deep, and rational layout.